I find the zero safe level needlessly shock oriented.
Many things have no safe value but a low level is less likely to play a major role in a life than another risk.. Cars, guns, opioids, suicide, cancer, maybe the last two have a minor lead influence, mostly outweighed by alcohol.
you do realize that other things have a no safe value...opioids no doctor can predict which dose of opioid produces the addiction...opioids first use was for pain medication for those with terminal diseases
Many things have no safe value but a low level is less likely to play a major role in a life than another risk.. Cars, guns, opioids, suicide, cancer, maybe the last two have a minor lead influence, mostly outweighed by alcohol.